var ec_right1 = echarts.init(document.getElementById('speed'),"dark");
var ec_right1_option = {
    tooltip: {
    formatter: '{a} <br/>{b} : {c}%'
  },
  series: [
    {
      name: 'Pressure',
      type: 'gauge',
      progress: {
        show: true
      },
      detail: {
        valueAnimation: true,
        formatter: '{value}'
      },
      data: []
    }
  ]
};
ec_right1.setOption(ec_right1_option);